Outliner for redacting?

The only point it may not fit your requirements is (2): You’d have to break the original text up into slices - Scrivener does not do that for you.
Just move the cursor to the position where a new section begins and press CTRL+K or select “Documents -> Split -> at Selection” or highlight a heading and select “Documents -> Split -> With Selection as Title” (CTRL+SHIFT+K). This creates a new note in the binder that you can rearrange as you please.

You would not even need to delete sections from the original text - simply use the “Compile” command to select the notes/sections which you want to export and have them written in a RTF file.